SOLUTION: i doubt this is in the right category, but i have no idea what i am doing. If {{{a^3 + b^3=50}}} and (a+b)^3, then ab(a +b)=????

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: i doubt this is in the right category, but i have no idea what i am doing. If {{{a^3 + b^3=50}}} and (a+b)^3, then ab(a +b)=????      Log On


   

Question 28063: i doubt this is in the right category, but i have no idea what i am doing.
If a%5E3+%2B+b%5E3=50 and (a+b)^3, then ab(a
+b)=????
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
(A+B)^3=A^3+B^3+3AB(A+B)=50+3AB(A+B)
AB(A+B)=(A+B)^3-50...IF YOU BARE GIVEN (A+B)^3 THEN WE CAN FIND AB(A+B) FROM THE ABOVE EQN.